The causes of tinnitus include outer ear lesions, middle ear lesions, cochlear lesions, post-cochlear lesions, central auditory pathway lesions, vascular lesions, palatal myoclonus, and eustachian tube lesions. 1. Outer ear lesions: Tinnitus can be caused by obstruction of the auricle and external auditory canal. 2. Middle ear lesions: such as jugular vein tumors can cause pulsatile tinnitus. 3. Cochlear lesions: the mechanism of tinnitus caused by cochlear lesions is not clear. 4. Post-cochlear lesions: such as acoustic neuroma and meningioma. 5. Central auditory pathway lesions: such as multiple sclerosis, tumors and other nerve fibers involved, can interfere with the auditory conduction pathway reflex arc, resulting in tinnitus. 6. Vascular lesions: carotid artery or vertebral artery system vascular lesions, such as aneurysm, arterio-venous fistula, etc., can cause tinnitus. 7. Palatal myoclonus: a common cause of tinnitus. 8. Eustachian tube lesions: loss of adipose tissue around the eustachian tube or other factors causing abnormal opening of the eustachian tube, which can cause tinnitus. 9. Temporomandibular joint disease: such as temporomandibular arthritis can cause tinnitus. 10. Psychosomatic diseases: If the tinnitus sound is speech-like, it is phantom hearing, which is a symptom of mental illness. Hearing is caused by psychological reasons, tinnitus sound for music or song, may also be mild psychosis or mental disorder and accompanied by tinnitus. 11. Other diseases: some diseases can cause tinnitus, such as thyroid dysfunction, diabetes, migraine, kidney disease. Tinnitus patients should go to the hospital in a timely manner, under the guidance of the doctor standardized treatment.